import Vue from 'vue'
import Router from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'

Vue.use(Router)

const router = new Router({
  routes: [
    { path: '/', redirect: '/login' },
    { path: '/login', component: Login },
    {
      path: '/home',
      component: Home,
      redirect: '/welcome',
      children: [
        { path: '/welcome', component: Welcome },
        { path: '/users', component: Users },
        { path: '/rights', component: Rights },
        { path: '/roles', component: Roles }
      ]
    }
  ]
})
// 挂载路由守卫
router.beforeEach((to, from, next) => {
  // to 表示将要访问的路径
  // from 表示从那个路径跳转而来
  // next 表示放行 next（路径）强行跳转
  // 登陆页直接放行
  if (to.path === '/login') return next()
  // 不是登陆页面则获取tokenStr值
  const tokenStr = window.sessionStorage.getItem('token')
  // 进行tokenStr的比对 没有则强行跳转回登陆页面
  if (!tokenStr) return next('/login')
  // 有则放行
  next()
})

export default router
